The Cost of an ADU

In the Bay Area, the demand for housing and flexible living options is rising. Accessory dwelling units (ADUs) offer a convenient and cost-effective solution for homeowners throughout California.

What Is an ADU?

An ADU is an additional living space constructed on the same land as the original structure. ADUs come in various sizes, styles and constructions to suit different purposes and add value to a property. They can also be used for:

• Office spaces
• Yoga studios
• Rental properties
• Multigenerational housing

How Much Does Building an ADU Cost?

The cost of building an ADU depends on many factors, such as the structure’s design, permit requirements and construction needs. The average cost of a move-in ready ADU is between $350 and $800 per square foot — but with so many variables to consider, consulting with a professional ADU contracting team is the best way to get an accurate estimate for your project.

Design

Design costs will depend on the unit type. If you are starting from scratch or building a detached ADU, prices for new materials will typically be higher than for an attached ADU or conversion that requires fewer materials. Any desired customizations will also impact the price.

Permit

California state laws protect homeowners’ rights to build ADUs, but these construction projects must have appropriate permits and adhere to building codes. Permit costs and requirements vary by city, so you will need to research specific ADU permit costs for your area and factor them into your project’s budget.

Construction

Construction costs differ depending on the project’s specific scope. Prices constantly fluctuate, so you will want to contact your contractor for an accurate estimate. An ADU’s complexity, design elements and finishes can significantly influence the overall cost.

Labor

The cost of an ADU will also vary depending on how much labor you need to accomplish your preferred design and construction. Finding the right service is essential so you can trust the labor you are paying for. Valley Home Builders offers transparency throughout the entire process and promises to do quality work.

Furnishing and Landscaping

When planning your budget, you will also need to consider costs for furniture, appliances, housewares and, in some cases, landscaping. When you work with Valley Home Builders, you can trust us to factor extras like move-in-ready finishes and appliances into our proposals.

Accessory Dwelling Unit FAQs

Find answers to other common questions about ADUs to see how they can enhance your property.

How Long Does It Take to Build ADUs?

An average time frame is three to six months, but the time it takes to build an ADU depends on the structure’s type and size. An on-site, new construction ADU will require more time than a garage or basement conversion.

How Big Are ADUs From Valley Home Builders?

ADU sizes vary depending on your lot size, needs and wants. For local agencies without an ordinance, an ADU cannot exceed 1,200 square feet, and attached ADUs cannot exceed 50% of the primary dwelling’s size. A junior accessory dwelling unit must be 500 square feet or fewer. Specifications will also depend on your property, different laws where you live and how you plan to use your ADU.

How Much Rental Income Can I Earn From an ADU?

Income earned from renting your ADU will depend on the unit’s size, appliances and design features. Investing in the highest-quality construction methods, designer finishes and appliances will cost more upfront, but these investments can generate a high return.

What Are the Benefits of an ADU From Valley Home Builders?

Homeowners can expect to gain numerous advantages from an ADU built by Valley Home Builders, such as:

• A flexible living space
• Improved infrastructure
• Comfortable multigenerational living
• Additional rental income
• Increased property value

Why Choose Valley Home Builders for ADU Services?

Valley Home Builders is an established ADU construction leader in the South Bay Area. Our expertise and experience allow us to obtain all necessary permits and inspections quickly and affordably to help reduce the cost of your ADU. We specialize in creative designs and innovative solutions, helping you create the ADU space you want and need.

While most contractors focus on price, our top priority will always be you as the client. We provide the highest possible customer service and value, offering honest, transparent solutions to your needs and concerns so you can feel confident in the financial investment you make in your ADU.

Start Building With Valley Home Builders

Turn your dream ADU into a reality with Valley Home Builders. We offer comprehensive, cost-effective services that guide you through the process from start to finish and ensure your satisfaction. Request a complimentary consultation today to learn more about our ADU services.